CN108277903B - Assembled truss type light steel frame-punched thin steel plate-concrete combined wall - Google Patents
Assembled truss type light steel frame-punched thin steel plate-concrete combined wall Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 156
- 239000010959 steel Substances 0.000 title claims abstract description 156
- 239000004567 concrete Substances 0.000 title claims abstract description 102
- 238000009415 formwork Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000002131 composite material Substances 0.000 claims description 34
- 238000004080 punching Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims 5
- 238000005266 casting Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 16
- 238000005452 bending Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004574 high-performance concrete Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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Abstract
Description
技术领域:Technical field:
本发明属于建筑结构工程中装配式组合墙制作技术领域,具体涉及一种装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙及作法。The invention belongs to the technical field of fabrication of prefabricated composite walls in building structure engineering, and particularly relates to a prefabricated truss-type light steel frame-punched thin steel plate-concrete composite wall and a method thereof.
背景技术:Background technique:
当前,我国正处在新型城镇化、新农村建设蓬勃发展时期,量大面广的新农村建造、迫切的新农村改造目标,使得简易的集成房屋、低层装配式房屋开始在低多层农房结构中发展起来。现阶段,集成房屋、装配式房屋多采用钢结构构件或钢混结构构件组成的梁柱框架作为房屋结构的主要受力体系,墙体为外挂墙板或填充墙,因此具有拆装便捷、布局灵活、建设周期短等优良特性。但同时,作为房屋结构的主要构件,外挂墙板及填充墙板,仅能作为房屋的围护构件,不能参与受力,故存在房屋结构承载力低、延性差,多发生脆性破坏的问题,房屋整体也存在稳定性差,抗震能力差的问题,从而极大制约了集成房屋、装配式房屋在住宅中的应用。At present, my country is in a period of vigorous development of new urbanization and new rural construction. The large-scale and wide-ranging new rural construction and the urgent new rural reconstruction goal make simple integrated houses and low-rise prefabricated houses begin to be used in low-rise and multi-storey farm houses. developed in the structure. At this stage, integrated houses and prefabricated houses mostly use beam-column frames composed of steel structural components or steel-concrete structural components as the main stress system of the house structure. Excellent features such as flexibility and short construction period. However, at the same time, as the main components of the house structure, the external wall panel and the infill wall panel can only be used as the enclosure components of the house and cannot participate in the force, so there are problems of low bearing capacity, poor ductility and brittle failure of the house structure. The overall housing also has problems of poor stability and poor earthquake resistance, which greatly restricts the application of integrated houses and prefabricated houses in residential buildings.
我国村镇建筑量占全国总建筑量的60%,多数农房位于抗震设防地区,如何合理设计并利用墙体,提高低层集成房屋、装配式房屋的承载力,增强其抗震能力,而不影响其空间布局灵活的优势,将具有承载能力与抗震功能的墙体运用到低多层建筑,特别是新农村建设时期的村镇低多层农房结构中,是推动我国新型城镇化、新农村建设的关键。The construction volume of villages and towns in my country accounts for 60% of the total construction volume of the country. Most of the rural houses are located in the earthquake-resistant fortified areas. How to reasonably design and use the walls to improve the bearing capacity of low-rise integrated houses and prefabricated houses and enhance their seismic capacity without affecting them? With the advantage of flexible spatial layout, the application of walls with bearing capacity and anti-seismic functions to low-rise buildings, especially low-rise buildings in villages and towns during the period of new rural construction, is the driving force for promoting new urbanization and new rural construction in my country. The essential.
因此,研发一种经济实用,造价低廉,施工简便的适用于低多层建筑,特别是村镇低多层农房结构的装配式组合墙具有十分重要的实践意义和社会经济价值。Therefore, it is of great practical significance and social and economic value to develop a prefabricated composite wall that is economical, practical, low-cost, and easy to construct, suitable for low-rise buildings, especially low-storey rural houses in villages and towns.
发明内容:Invention content:
本发明提供了一种装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙,为低多层集成房屋、装配式房屋提供了一种具有较好承载能力及抗震能力的装配式墙体的作法,适合在具有抗震设防要求的低多层建筑,特别是村镇低多层农房中广泛推广,以解决目前农房结构缺少抗震措施,抗震能力薄弱的现状。同时,构件现场装配、施工简单,可以促进新农村建设发展目标的完成。The invention provides a prefabricated truss-type light steel frame-punched thin steel plate-concrete composite wall, which provides a prefabricated wall with better bearing capacity and earthquake resistance for low-level multi-storey integrated houses and prefabricated houses This method is suitable for low-rise buildings with seismic fortification requirements, especially low-storey farm houses in villages and towns, to solve the current situation that the structure of farm houses lacks seismic measures and has weak seismic capacity. At the same time, the on-site assembly and construction of the components are simple, which can promote the completion of the new rural construction and development goals.
为实现上述目的,本发明采用如下技术方案:To achieve the above object, the present invention adopts the following technical solutions:
一种装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙,包括钢管混凝土边框柱(1)、钢管混凝土边框梁(2)、冲孔薄钢板(3)、钢管混凝土桁架肋(4)、混凝土(5)、连接端板(6)和连接螺栓(7);所述的冲孔薄钢板(3)是在板厚不超过5mm的钢板上经冲床通过模具冲压出孔的钢板,孔心距不小于50mm,冲孔面积不低于冲孔薄钢板(3)面积的1/2;在钢管混凝土边框柱(1)的柱顶及柱脚位置分别焊接连接端板(6),连接端板(6)上预制螺栓孔;钢管混凝土边框柱(1)与钢管混凝土边框梁(2)焊接,形成组合墙轻钢框架边框,边框内部焊接冲孔薄钢板(3),随后在冲孔薄钢板两侧交叉布置钢管混凝土桁架肋(4),钢管混凝土桁架肋(4)两端与组合墙轻钢框架边框焊接固定,至此,形成组合墙钢骨架;支模浇筑墙板混凝土(5),养护后形成一种装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙;装配时,组合墙与外部结构通过连接螺栓(7)进行连接。An assembled truss-type light steel frame-punched thin steel plate-concrete composite wall, comprising a concrete-filled steel tube frame column (1), a concrete-filled steel tube frame beam (2), a punched thin steel plate (3), and a concrete-filled steel tube truss rib (4) ), concrete (5), connecting end plates (6) and connecting bolts (7); the punched thin steel plate (3) is a steel plate with holes punched out by a punch on a steel plate with a thickness of no more than 5 mm through a die, The hole center distance is not less than 50mm, and the punching area is not less than 1/2 of the area of the punched thin steel plate (3). The bolt holes are prefabricated on the connecting end plates (6); the CFST frame columns (1) are welded with the CFST frame beams (2) to form a composite wall light steel frame frame, and the punched thin steel plate (3) is welded inside the frame, and then punched Concrete-filled steel tube truss ribs (4) are arranged crosswise on both sides of the hole thin steel plate, and both ends of the concrete-filled steel tube truss rib (4) are welded and fixed to the frame frame of the light steel frame of the composite wall. At this point, the steel frame of the composite wall is formed; the formwork is poured into the wall slab concrete (5). ), after curing, an assembled truss-type light steel frame-punched thin steel plate-concrete composite wall is formed; during assembly, the composite wall and the external structure are connected by connecting bolts (7).
所述的装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙,其特征在于:The assembled truss-type light steel frame-punched thin steel plate-concrete composite wall is characterized in that:
所述的钢管混凝土边框柱(1)及钢管混凝土边框梁(2)采用方形或矩形钢管,钢管壁厚不大于8mm,钢管截面边长不小于50mm,管内填充混凝土。钢管混凝土具有较高的受剪承载力,钢管混凝土边框柱(1)及钢管混凝土边框梁(2)焊接,形成组合墙轻钢框架边框,显著增加了墙板的抗剪强度。The CFST frame column (1) and the CFST frame beam (2) are made of square or rectangular steel pipes, the wall thickness of the steel pipes is not more than 8mm, the side lengths of the steel pipes are not less than 50mm, and the pipes are filled with concrete. CFST has a high shear bearing capacity, and the CFST frame column (1) and the CFST frame beam (2) are welded to form a composite wall light steel frame frame, which significantly increases the shear strength of the wall panel.
所述的冲孔薄钢板(3)是经冲床通过模具冲压出圆形孔、方形孔或矩形孔的钢板,冲孔薄钢板(3)布置在轻钢框架边框中部,同时浇筑在混凝土(5)中部。冲孔薄钢板(3)定位后与墙板钢管混凝土边框焊接固定,浇筑在混凝土中起到加筋的作用,但又比配置钢筋施工更简易,具有整体性强、网孔均匀、亦于加工、成本低廉等特点,提高了墙板平面外刚度,提高了墙板抗震能力。The punched thin steel plate (3) is a steel plate with circular holes, square holes or rectangular holes punched out by a punching machine through a die. ) middle. After the punched thin steel plate (3) is positioned, it is welded and fixed with the concrete-filled steel tube frame of the wall plate, and it is poured into the concrete to play the role of reinforcement. , low cost and other characteristics, improve the out-of-plane rigidity of the wall panel, and improve the seismic capacity of the wall panel.
所述的钢管混凝土桁架肋(4)采用方形或矩形钢管填充混凝土而成,钢管壁厚不大于5mm,冲孔薄钢板(3)两侧交叉布置的墙体钢管混凝土桁架肋(4)与墙体轻钢框架边框一起,构成墙板桁架受力骨架;混凝土(5)浇筑时,钢管混凝土桁架肋(4)部分或全部浇筑在墙板内。钢管混凝土桁架肋(4)的设置,增加了墙板抗弯、抗剪能力及平面外承载力,提高了墙板抗震水平。The concrete-filled steel tube truss rib (4) is made of square or rectangular steel tube filled with concrete, the wall thickness of the steel tube is not more than 5 mm, and the wall body CFST truss rib (4) and the wall are arranged crosswise on both sides of the punched thin steel plate (3). The frame frame of the body light steel frame together forms the stress skeleton of the wall panel truss; when the concrete (5) is poured, part or all of the concrete-filled steel tube truss rib (4) is poured in the wall panel. The setting of the concrete-filled steel tube truss rib (4) increases the bending resistance, shear resistance and out-of-plane bearing capacity of the wall panel, and improves the seismic resistance level of the wall panel.
所述的混凝土(5)浇筑厚度40mm~100mm,混凝土强度等级为C30~C60;混凝土(5)为普通混凝土、不同再生粗骨料掺量的再生混凝土或高性能混凝土。再生混凝土为旧建筑拆除后的废弃混凝土块经过破碎、清洗、分级后,得到的混凝土骨料制备而成,采用再生混凝土,实现了废弃混凝土的资源化和减量化的处理原则,能起到保护环境和节约资源的作用,具有显著的社会效益,促进国家可持续发展。根据工程需要,可配置抗裂、抗腐蚀等性能的高性能混凝土。The concrete (5) has a pouring thickness of 40mm-100mm, and a concrete strength grade of C30-C60; the concrete (5) is ordinary concrete, recycled concrete or high-performance concrete with different recycled coarse aggregate contents. Recycled concrete is prepared from the concrete aggregate obtained by crushing, cleaning and grading waste concrete blocks after the demolition of old buildings. The role of protecting the environment and saving resources has significant social benefits and promotes the sustainable development of the country. According to the needs of the project, high-performance concrete with anti-cracking and anti-corrosion properties can be configured.
所述的连接端板(6)采用的钢板厚度不小于6mm,连接端板上加工有对应连接螺栓(7)孔径的螺栓孔。连接端板(6)与钢管混凝土边框柱(1)焊接时,可焊接加劲肋加强连接。The thickness of the steel plate used in the connecting end plate (6) is not less than 6 mm, and the connecting end plate is machined with bolt holes corresponding to the diameters of the connecting bolts (7). When the connecting end plate (6) is welded with the concrete-filled steel tubular frame column (1), a stiffening rib may be welded to strengthen the connection.
所述的连接螺栓(7)不小于M16,强度不小于8.8级,组合墙安装时,每个连接端板(6)上的连接螺栓(7)不少于4个。The connecting bolts (7) are not less than M16 and the strength is not less than 8.8. When the composite wall is installed, the connecting bolts (7) on each connecting end plate (6) are not less than 4.
与现有技术相比,本发明的装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙具有如下优势:Compared with the prior art, the assembled truss-type light steel frame-punched thin steel plate-concrete composite wall of the present invention has the following advantages:
(1)传统装配式墙体多为外挂墙板或大模块填充墙,仅能作为房屋的围护构件,不能参与受力,故存在房屋结构整体稳定性差、承载力低、延性差,抗震能力弱、多发生脆性破坏的问题,本发明提供的装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙,在结构中充当受力构件,具有较好的承载能力及抗震能力,适合在具有抗震设防要求的低多层建筑,特别是村镇低多层农房中广泛推广,以促进新农村建设发展目标的完成。(1) The traditional prefabricated walls are mostly external wall panels or large module infill walls, which can only be used as the enclosure components of the house and cannot participate in the force. Therefore, the overall stability of the house structure is poor, the bearing capacity is low, the ductility is poor, and the seismic capacity To solve the problem of weak and brittle failure, the assembled truss-type light steel frame-punched thin steel plate-concrete composite wall provided by the present invention acts as a stressed member in the structure, has good bearing capacity and seismic capacity, and is suitable for Low-storey buildings with seismic fortification requirements, especially low-storey farm houses in villages and towns, are widely promoted to promote the completion of new rural construction and development goals.
(2)组合墙作为抗震单元在柱网中选择性布置,布置在低多层房屋结构受力薄弱位置,从而增加了房屋结构侧向刚度及抗震能力,而不影响建筑开间及布局。(2) The composite wall is selectively arranged in the column network as an anti-seismic unit, and is arranged in the weak position of the low-storey building structure, thereby increasing the lateral stiffness and seismic capacity of the building structure without affecting the building bay and layout.
(3)钢管混凝土边框柱、钢管混凝土边框梁及钢管混凝土桁架肋一起,在墙板内形成钢管混凝土桁架受力体系,改变了墙体损伤破坏形态,能够有效提高墙体承载力以及延性。(3) The CFST frame column, the CFST frame beam and the CFST truss rib together form the CFST truss stress system in the wall panel, which changes the damage and failure mode of the wall, and can effectively improve the bearing capacity and ductility of the wall.
(4)钢管混凝土边框梁柱形成墙体轻钢框架边框的设计,提高了墙板整体性,弥补了混凝土薄墙板构件边框位置处,在吊装、运输及施工过程中极易出现的磕角、碎裂影响混凝土薄墙板使用的问题,提高了装配式墙板质量。(4) The design of the frame frame of the light steel frame formed by the concrete-filled steel tube frame beams and columns improves the integrity of the wall panel and makes up for the knock angle that is easy to occur during the lifting, transportation and construction process at the frame position of the concrete thin wall panel member. , fragmentation affects the use of thin concrete wall panels, and improves the quality of prefabricated wall panels.
(5)冲孔薄钢板在混凝土墙板中起到加筋的作用,但比配置钢筋施工简易,易于定位,具有整体性强、网孔均匀、亦于加工、成本低廉等特点,提高了墙板平面外刚度,提高了墙板抗震能力。(5) The punched thin steel plate plays the role of reinforcement in the concrete wall panel, but it is easier to construct than the configuration of steel bars, easy to locate, has the characteristics of strong integrity, uniform mesh, easy processing, low cost, etc. The out-of-plane stiffness of the panel improves the seismic capacity of the wall panel.
(6)钢管混凝土与冲孔薄钢板形成墙板钢骨架的设计,增加了墙板抗弯、抗剪能力及平面外承载力,提高了墙板抗震性能,将本发明推广到农房结构中,面对量大面广的低多层农房改造,可以快速有效的提高农房的抗震性能。(6) The design of the steel skeleton of the wall panel formed by the concrete filled steel tube and the punched thin steel plate increases the bending resistance, shear resistance and out-of-plane bearing capacity of the wall panel, improves the seismic performance of the wall panel, and extends the present invention to the structure of the farm house , In the face of large-scale and wide-scale reconstruction of low-rise farm houses, it can quickly and effectively improve the seismic performance of farm houses.
(7)墙板混凝土层厚度较薄,自重轻,有利于运输及施工现场的装配。同时,钢管混凝土及墙板混凝土可采用绿色环保的再生混凝土,有利于促进国家可持续发展目标。(7) The thickness of the concrete layer of the wall panel is thin and the dead weight is light, which is conducive to transportation and assembly on the construction site. At the same time, concrete-filled steel tubes and wall panel concrete can use green and environmentally friendly recycled concrete, which is conducive to promoting the national sustainable development goals.
(8)传统抗震墙多为现浇构件,本发明的组合墙为装配式构件,工厂预制,墙板浇筑质量得到了保证,建筑现场直接安装,有效节约资源、降低能耗,同时极大缩短了施工时间。装配式的结构形式,可以快速有效的提高房屋的抗震性能,对实现住宅产业化、城镇化建设具有极大地促进作用,是一种新型组合结构农房技术的研发成果,对推动传统农房结构技术的改良具有重要作用。(8) Most of the traditional earthquake-resistant walls are cast-in-place components. The composite wall of the present invention is a prefabricated component, which is prefabricated in the factory, and the pouring quality of the wall panels is guaranteed. construction time. The prefabricated structural form can quickly and effectively improve the seismic performance of the house, which greatly promotes the realization of residential industrialization and urbanization construction. Improvements in technology play an important role.
附图说明:Description of drawings:
图1是装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙局部示意图;Figure 1 is a partial schematic diagram of an assembled truss-type light steel frame-punched sheet steel-concrete composite wall;
图2是装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙钢骨架局部示意图;Figure 2 is a partial schematic diagram of the assembled truss-type light steel frame-punched sheet steel-concrete composite wall steel frame;
图3是装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙装配效果图。Figure 3 is an assembly effect diagram of an assembled truss-type light steel frame-punched thin steel plate-concrete composite wall.
图中:1-钢管混凝土边框柱;2-钢管混凝土边框梁;3-冲孔薄钢板;4-钢管混凝土桁架肋;5-混凝土;6-连接端板;7-连接螺栓。In the figure: 1- CFST frame column; 2- CFST frame beam; 3- punched thin steel plate; 4- CFST truss rib; 5- concrete; 6- connecting end plate; 7- connecting bolt.
具体实施方式:Detailed ways:
发明中的装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙,结合附图1~3阐明本发明制作方法如下:The prefabricated truss-type light steel frame-punched thin steel plate-concrete composite wall in the invention is explained as follows with reference to the accompanying drawings 1-3:
第一步:在钢管内浇筑混凝土并养护,形成墙板的钢管混凝土边框柱、钢管混凝土边框梁及墙体钢管混凝土桁架肋;在连接端板上加工对应连接螺栓孔径的螺栓孔,然后将连接端板分别焊接在每个钢管混凝土边框柱柱顶及柱底;将钢管混凝土边框柱、钢管混凝土边框梁焊接,形成组合墙轻钢框架边框。The first step: pour concrete in the steel pipe and maintain it to form the CFST frame column, the CFST frame beam and the CFST truss rib of the wall; The end plates are respectively welded on the top and bottom of each CFST frame column; the CFST frame column and the CFST frame beam are welded to form a composite wall light steel frame frame.
第二步:在组合墙轻钢框架边框内,焊接冲孔薄钢板,然后在冲孔薄钢板两侧交叉布置钢管混凝土桁架肋,肋两端焊接固定在组合墙轻钢框架边框上,至此,形成组合墙钢骨架。Step 2: Weld the punched thin steel plate in the frame of the light steel frame of the composite wall, and then arrange the concrete-filled steel tube truss ribs on both sides of the punched thin steel plate, and both ends of the ribs are welded and fixed on the frame frame of the light steel frame of the composite wall. Form a composite wall steel skeleton.
第三步:制作墙板浇筑模板,配置混凝土,浇筑墙板混凝土,养护后形成装配式桁架型轻钢框架-冲孔薄钢板-混凝土组合墙。组合墙装配时,与外部结构通过连接螺栓进行安装连接。The third step: make the wall panel pouring formwork, configure the concrete, pour the wall panel concrete, and form an assembled truss-type light steel frame-punched thin steel plate-concrete composite wall after curing. When the composite wall is assembled, it is installed and connected to the external structure through connecting bolts.
以上是本发明的一个典型的实施案例,但是本发明的实施不限于此。本发明中所列举的各结构尺寸及材料的选取均可根据实际需要选取,在此不再一一列举。The above is a typical implementation case of the present invention, but the implementation of the present invention is not limited to this. The selection of each structure size and material listed in the present invention can be selected according to actual needs, and will not be listed one by one here.
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